比较口语化普遍的翻译应该是This is the highlight of today 意思是这是今天的亮点或者“出彩点”
要是直译的话可以写“This is the best performance today"
你这句汉语应该是“这是今天最精彩的节目”,这样比较符合语法。
This is today's most wonderful progrmme.
=This is the most wonderful progrmme today.
=This is today's most wonderful progrm.
=This is the most wonderful progrm today.
This is the most wonderful program today